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Allan James (2) Kamphol Udomrittiruj (1)

Colouration: As per original description: “Very light or pale brown, lower or under surfaces more or less whitish. Upper surface of head and back sprinkled with dark grey dots. Band of dark dots along lateral line and broader one along lower side of trunk and tail parallel. Iris greyish, also maxillary barbell, other barbells whitish. Outer edge of adipose fin dusted with dark grey dots. Caudal dark grey. Other fins pale or whitish. Habitat: Adults occur in medium to large-sized rivers and flooded fields. Reproduction: Breeding habits and seasonal movements are unknown. Oviparous, distinct pairing possibly like other members of the same family. Diet: Feeds on insect larvae, fish scales and other fish body parts, as well as plant debris. Etymology: The genus name Mystus: "Mystax" meaning whiskered (hair on the upper lip) Mystus was first used by Belon in 1553 to describe all fish with whiskers. The specific name rhegma: Greek for breach, referring to distinct notch (1/7 length of adipose fin) between dorsal and adipose fins. Remarks: "This is a small and graceful looking species, which reminds me of species of the South American pimelodid genus Pimelodella Eigenmann & Eigenmann, 1888. The lack of any semi-ocellus, the thin dark band across the lateral line, and large gap between the small supraoccipital process and basal bone of the dorsal fin spine differentiate this species from all the others" (Grant, 2009).

None

None

Bagridae

Asia: Bangkok, Meklong and Chao Phraya basins in Thailand and Lower Mekong.

12.0cm. (4¾ins)

22-25°C (71-77°F)

6.5-7.5.

Froese, R. and D. Pauly. Editors. 2009. FishBase. World Wide Web electronic publication. www.fishbase.org, version (07/2009).
Grant, Steven. ScotCat Article:  The striped catfishes of the genus Mystus Scopoli, 1777 (Siluriformes: Bagridae)
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.